Resolution Recovery by PSF Deconvolution on List Mode MLEM Reconstruction for Dynamic Cardiac SPECT System
2022 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC)(2022)
摘要
This work presents improvement in imaging resolution by implementing spatial variant point spread function (SV-PSF) with list mode MLEM reconstruction for the DC-SPECT system being developed at MGH, Harvard. Results show that with PSF modeling applied, quality of the reconstructed image is improved, and DC-SPECT system can achieve a 4.5 mm central spatial resolution with average 795 counts/(s*Mbq). The results show substantial improvement over the gold standard GE Discovery 570c performance (spatial resolution 7 mm with an average 460 counts/s*MBq, central resolution 5.8 mm).
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关键词
Resolution Recovery,Spatial Resolution,Spatial Variation,Point Spread Function,Monte Carlo Simulation,Low-pass,Transverse Plane,Transverse Dimensions,3D Gaussian,Cm In Dimension
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